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US20220316785A1 - Low pressure carbon snow injector - Google Patents

Low pressure carbon snow injector Download PDF

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Publication number
US20220316785A1
US20220316785A1 US17/711,801 US202217711801A US2022316785A1 US 20220316785 A1 US20220316785 A1 US 20220316785A1 US 202217711801 A US202217711801 A US 202217711801A US 2022316785 A1 US2022316785 A1 US 2022316785A1
Authority
US
United States
Prior art keywords
tube
snow
horn
plate
venturi system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US17/711,801
Other languages
English (en)
Inventor
Marco EMANUELLI
Silvano TROTTA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Publication of US20220316785A1 publication Critical patent/US20220316785A1/en
Abandoned legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/12Devices using other cold materials; Devices using cold-storage bodies using solidified gases, e.g. carbon-dioxide snow
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/50Carbon dioxide
    • C01B32/55Solidifying
    • AHUMAN NECESSITIES
    • A21BAKING; EDIBLE DOUGHS
    • A21DTREATMENT OF FLOUR OR DOUGH FOR BAKING, e.g. BY ADDITION OF MATERIALS; BAKING; BAKERY PRODUCTS
    • A21D6/00Other treatment of flour or dough before baking, e.g. cooling, irradiating or heating
    • A21D6/001Cooling

Definitions

  • the present invention deals with the devices for making CO 2 snow, ready to be injected in an installation using such a snow, notably an installation of the food industry.
  • the invention is particularly interested in the installations (mixers) for cooling dough products, cooling being obtained thanks to the injection of CO 2 snow, with the following objectives:
  • liquid storages of carbon dioxide (CO 2 ) are high pressure containers (average pressure is above 18 bar).
  • CO 2 carbon dioxide
  • the limits of this system are related to the amount of energy that the solid phase brings inside the mixer
  • the system proposed by the present invention allows the obtention of a snow, produced by the expansion of the liquid carbon dioxide of the tank source, at a much lower pressure.
  • the expansion of liquid carbon dioxide thanks to the transition of state, transforms a part of the liquid flow into gas and a part into solid.
  • the calibrated orifice installed at the inlet of the equipment, allows the complete change of state of the liquid flow, transforming it into many small flows. At this point the energy of the flow begins to reduce.
  • the calibrated orifice will be made with a suitable number and size of holes.
  • FIG. 1 is a photograph of an embodiment of the invention.
  • the calibrated orifices can be made for example with 24 mm diameter stainless steel discs. This size shows ideal conditions for fitting into the downstream J-tube inlet fitting and easily replaced.
  • the holes which make up the calibrated orifice, can have a diameter ranging between 1.1 mm and 1.9 mm, for the purpose of illustration to better understand the present proposal.
  • a transition plate wherein the end of the J-Tube fits into the plate, the plate being in its downstream side in gas connexion with two pipes, a main pipe and a secondary pipe, the main one at the top being able to carry the solid snow phase, and the second one at the bottom being able to carry the gaseous phase.
  • the main pipe, carrying snow is connected tangentially to the top of a cylinder (called snow horn).
  • snow horn a cylinder
  • the high velocity of the fluid forces the solid phase (carbon snow) to descend towards the bottom of the cylinder along its circumference before falling outside.
  • the lighter gas phase (which is generated by sublimation of the solid phase) is released inside the cylinder without a preferential path.
  • the motion of the gaseous fluid due to its low temperature, is descending towards the outside of the snow horn.
  • the secondary pipe (the one carrying gas) is connected to a venturi system installed on the top of the snow horn.
  • the high speed of the fluid, harnessed inside the venturi system generates a reduction in pressure inside the cylinder which sucks up the gaseous phase formed by sublimation of the solid phase which runs inside the cylinder.
  • the part of gas exiting the J-tube, used to create the depression, and the part of gas intercepted by the venturi system are conveyed outside.
  • a perforated pipe is advantageously installed inside the snow horn. This pipe, connected to the Venturi system above, allows the gas formed to be sucked up along the entire length of the snow horn.
  • the system takes advantage of the benefits of both devices (J Tube and Snow horn) and eliminates their main limitations.
  • the capacity of the J-tube is exploited to immediately separate most of the gas that is produced by the passage of state.
  • This gas flow at high pressure, before being evacuated to the outside, is used inside the Venturi system to generate a vacuum inside the snow horn in order to further eliminate the gas that the J-tube has not been able to separate.
  • the invention deals therefore with an equipment for making CO 2 snow, ready to be injected in an installation using such a snow, notably an installation of the food industry, equipment comprising the following elements:
  • FIGS. 2 a ) and 2 b ) in annex shows a schematic representation of the transition device 3 and help to better understand the structure and operation of this transition device:
  • “Comprising” in a claim is an open transitional term which means the subsequently identified claim elements are a nonexclusive listing i.e. anything else may be additionally included and remain within the scope of “comprising.” “Comprising” is defined herein as necessarily encompassing the more limited transitional terms “consisting essentially of” and “consisting of”; “comprising” may therefore be replaced by “consisting essentially of” or “consisting of” and remain within the expressly defined scope of “comprising”.
  • Providing in a claim is defined to mean furnishing, supplying, making available, or preparing something. The step may be performed by any actor in the absence of express language in the claim to the contrary.
  • Optional or optionally means that the subsequently described event or circumstances may or may not occur.
  • the description includes instances where the event or circumstance occurs and instances where it does not occur.
  • Ranges may be expressed herein as from about one particular value, and/or to about another particular value. When such a range is expressed, it is to be understood that another embodiment is from the one particular value and/or to the other particular value, along with all combinations within said range.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
US17/711,801 2021-04-01 2022-04-01 Low pressure carbon snow injector Abandoned US20220316785A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EPEP21315060.0 2021-04-01
EP21315060.0A EP4083545B1 (de) 2021-04-01 2021-04-01 Niederdruckinjektor für kohlenstoffschnee

Publications (1)

Publication Number Publication Date
US20220316785A1 true US20220316785A1 (en) 2022-10-06

Family

ID=75639856

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/711,801 Abandoned US20220316785A1 (en) 2021-04-01 2022-04-01 Low pressure carbon snow injector

Country Status (3)

Country Link
US (1) US20220316785A1 (de)
EP (1) EP4083545B1 (de)
AU (1) AU2022202106A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757367A (en) * 1971-02-08 1973-09-11 Chemetron Corp Method for carbon dioxide snow separation
US3807187A (en) * 1973-04-05 1974-04-30 Chemetron Corp Hood and method for generating carbon dioxide snow
US4111671A (en) * 1975-06-19 1978-09-05 Chemetron Corporation Method and apparatus for carbon dioxide snow separation
US4166364A (en) * 1978-05-15 1979-09-04 Air Products And Chemicals, Inc. Carbon dioxide snow hood
US4372130A (en) * 1981-09-17 1983-02-08 Air Products And Chemicals, Inc. Carbon dioxide snow generator with purging means
FR2962197A1 (fr) * 2010-07-01 2012-01-06 Linde France Dispositif de production et de distribution de neige carbonique
DE102012008592A1 (de) * 2012-04-27 2013-10-31 Messer France S.A.S Verfahren und Vorrichtung zum Kühlen von Produkten

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100101241A1 (en) * 2008-10-27 2010-04-29 Oehme William J Kinetic energy heat pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757367A (en) * 1971-02-08 1973-09-11 Chemetron Corp Method for carbon dioxide snow separation
US3807187A (en) * 1973-04-05 1974-04-30 Chemetron Corp Hood and method for generating carbon dioxide snow
US4111671A (en) * 1975-06-19 1978-09-05 Chemetron Corporation Method and apparatus for carbon dioxide snow separation
US4166364A (en) * 1978-05-15 1979-09-04 Air Products And Chemicals, Inc. Carbon dioxide snow hood
US4372130A (en) * 1981-09-17 1983-02-08 Air Products And Chemicals, Inc. Carbon dioxide snow generator with purging means
FR2962197A1 (fr) * 2010-07-01 2012-01-06 Linde France Dispositif de production et de distribution de neige carbonique
DE102012008592A1 (de) * 2012-04-27 2013-10-31 Messer France S.A.S Verfahren und Vorrichtung zum Kühlen von Produkten

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DE 102012008592 A1 Translation (Year: 2013) *
FR 2962197 A1 Translation (Year: 2012) *

Also Published As

Publication number Publication date
AU2022202106A1 (en) 2022-10-20
EP4083545B1 (de) 2025-02-12
EP4083545A1 (de) 2022-11-02

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